Carbon dioxide foaming of glassy polymers


Wessling, M. and Borneman, Z. and Boomgaard, Th. van den and Smolders, C.A. (1994) Carbon dioxide foaming of glassy polymers. Journal of Applied Polymer Science, 53 (11). pp. 1497-1512. ISSN 0021-8995

open access
Abstract:The mechanism of foaming a glassy polymer using sorbed carbon dioxide is studied in detail. A glassy polymer supersaturated with nitrogen forms a microcellular foam, if the polymer is quickly heated above its glass transition temperature. A glassy polymer supersaturated with CO2 forms this foam-like structure at much lower temperatures which indicates the Tg-depressing effect of CO2. Having this interpretation in mind, the overall sample morphology, i.e., a porous foam enclosed by dense outer skins, can be completely explained. The dense skins, however, are not homogeneous but show a nodular structure when analyzed by SEM and AFM. Foaming experiments with samples having a different thermal history suggest that the nucleation mechanism underlying the foaming process is heterogeneous in nature
Item Type:Article
Copyright:© 1994 John Wiley & Sons, Inc.
Science and Technology (TNW)
Research Group:
Link to this item:
Official URL:
Export this item as:BibTeX
HTML Citation
Reference Manager


Repository Staff Only: item control page

Metis ID: 106907